More like this.

@@ -20,0 +21 @@
+<gloss>gulping down (e.g. by a baby)</gloss>
@@ -22 +22,0 @@
-<gloss>gulping down (baby speech)</gloss>

Google N-gram Corpus Counts
╭─ーーーーーー─┬────────┬───────╮
│ ごっくん　　 │ 71.496 │ 54.7% │More emphatic version of ごくん
│ ゴックン　　 │ 47.741 │ 36.5% │
│ ゴックンし　 │  5.573 │  4.3% │
│ ごっくんし　 │  3.764 │  2.9% │
│ ゴックンする │  1.466 │  1.1% │
│ ごっくんする │    755 │  0.6% │
╰─ーーーーーー─┴────────┴───────╯

明鏡国語辞典　第二版
   ごっくん
     〘副(ト)〙液体を一口で飲み込むときの、のどの鳴る音を表す語。
        「冷えた茶を━と飲み干す」
     〘名・他サ変〙幼児語で、飲み込むこと。
        「お薬を━しなさい」

@@ -10,0 +11,6 @@
+<pos>&adv-to;</pos>
+<xref type="see" seq="2780010">ゴクン</xref>
+<misc>&on-mim;</misc>
+<gloss>with a gulp</gloss>
+</sense>
+<sense>
@@ -12,0 +19 @@
+<pos>&vt;</pos>
@@ -14,2 +20,0 @@
-<gloss>gulp</gloss>
-<gloss>gulping</gloss>
@@ -16,0 +22 @@
+<gloss>gulping down (baby speech)</gloss>

OK

compare this with the English phrases "Do you swallow?" and "spit or swallow"
I don't think the existence of these mean it'd be sensible for Collins to define 
swallow as
v.
1. to allow something to pass down the throat
2. to allow semen pass down the throat

Isn't this enough? It's obvious the word is frequently used in sexual contexts from the google results but are we really helping anybody 
by telling them this word can specifically refer to swallowing semen, among other things? It's not as if it's a sensitive word you need 
to be careful with - it's used in product names too.

@@ -15,5 +15,2 @@
-</sense>
-<sense>
-<pos>&n;</pos>
-<misc>&vulg;</misc>
-<gloss>semen-swallowing</gloss>
+<gloss>gulping</gloss>
+<gloss>swallowing</gloss>